problem23_85

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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23.85: a) kg) 10 m)(1.67 10 2 . 1 ( 2 C) 10 60 . 1 ( 2 2 1 2 27 15 2 19 p 2 2 p - - - × × × = = = k v r ke v m E E f i . s m 10 58 . 7 6 × = v b) For a helium-helium collision, the charges and masses change from (a): . s m 10 26 . 7 kg) 10 .67 m)(2.99)(1 10 5 . 3 ( C)) 10 60 . 1 ( 2 ( 6 27 15 2 19 × = × × × = - - - k v c) K. 10 4 . 6 ) K J 10 38 . 1 ( 3 ) s m 10 kg)(7.26 10 67 . 1 )( 99 . 2 ( 3 K 10 3 . 2 K) J 10 3(1.38 s) m 10 kg)(7.58 10 67 . 1 ( 3 2 2 3 9 23 2 6 27 2 H H 9 23 2 6 27 2 p p 2 × = × × × = = × = × × × = = = = - - - - k v m T k v m T mv kT K e e d) These calculations were based on the particles’ average speed. The distribution
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Unformatted text preview: of speeds ensures that there are always a certain percentage with a speed greater than the average speed, and these particles can undergo the necessary reactions in the sun’s core....
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